Cubic clock



FIG. 1 is a front view of the cubic clock showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a back end view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top right perspective view thereof. 

The ornamental design for a cubic clock, as shown. 